Cistern-guard.



ofiw. JOHNSON.

GISTERN GUARD. 7

APPLICATION FILED AUG. 22, 1910.

1 ,02 1,4 1 O. Patented Mar. 26, 1912.

I t hllll INVENTOR RN Y c LUMBIA FLANOORAPH C0-- WASHINGTON, Bic.

UNITED STATES PATEN T OFFICE.

CHARLES W. JOHNSON, 0F HOUSTON, TEXAS.

CISTERN-GUARI),

Specification of Letters Patent.

Patented Mar. 26, 1912.

Application filed August 22, 1910. Serial No. 578,429.

To all whom it may concern:

Be it known that I, CHARLES W. JOHN- SON, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented certain new and useful Improvements in Cistern-Guards, of which the following is a specification.

My invention relates to new and useful improvements in cistern guards.

The object of the invention is to provide a device of the character described which will guard the water cistern against impure water which drains from the roof of the building to which the cistern appertains.

This device is specially intended to collect the first water, which drains from the roof, and the impurities and foreign matter contained therein, and to automatically discharge the same without the cistern; and it also comprehends means for collecting the water, after the roof has been. washed clean, and conducting the same into the cistern, free from any foreign or waste substance.

Finally the object of the invention is to provide a device of this character, which will perform its functions simply and automatically,

which will be certain in its operation, which will be simply and easily constructed and one which will be inexpensive and easily kept in repair.

With the above and other objects in view, my invention has particular relation to certain novel features of construction and operation, an example of which is given in this specification, and illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of my device, with a portion of the wall of the same broken away, and in position for collect-ing the impure water. Fig. 2 is a side elevation of the same showing the device in position for discharging its contents andalso show ing the cistern feed pipe connected and in position for leading the pure water into the cistern. Fig. 3 is a rear elevation of the device.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 designates the main receptacle of the device, which is provided with an overhanging discharge spout 2.

This receptacle should be made large enough to collect all of the water which first falls onto the roof, so that it will not discharge until the roof is thoroughly cleansed. Consequently the size will necessarily vary in accordance with the size of the roof to be drained. This receptacle is, preferably, located near the cisternbut its exact location is immaterial-and is pivotally attached to a support 3 by means of bearings 4 one on either side. These bearings are so located, with reference to the lineof gravitation, of the receptacle, that said receptacle normally maintains an upright posit-ion, when empty. Projecting from one side of this receptacle and, leadinginto the same is an elbow pipe 5 which receives the water from a section 6 of the cistern feed pipe, which in turn receives the water from the eave trough and the roof. hen the receptacle 1 is empty it will occupy the position shown in Fig. 1, but when it is filled by means of the drainage water from the roof, its equilibrium is destroyedby reason of the overbalancing weight of the water in spout 2 and it is-forced into the po- I sit-i on shown in Fig. 2, and thereby a portion of its contents discharged. This receptacle carries a section 7 of the cistern feed pipe, immovably attached thereto, and when the said receptacle is tilted forward, as shown in Fig. 2, this section is carried into alinement with section 6, of said pipe, located above the receptacle, and section 7 of the said pipe, located therehelow; and a connected pipe is thus formed, leading from the roof to the cistern.

The receptacle 1, is provided with a small orifice 9 through which the undischarged water gradually escapes therefrom until said receptacle is entirely empty. This receptacle is provided with a bottom 10, which is forwardly inclined to insure a complete discharge thereof; and is also provided with a weight 11, located in the rear of the bearings 4 to insure a restoration of the upright position of the receptacle, when it has drained empty.

It is obvious that this device will normally maintain the position shown in Fig. 1, when empty, and will collect the first water falling on the roof and discharge the same without the cistern.

It is also obvious that the device will 00- cupy the position shown in Fig. 2, when once in that position, until it has been entirely drained, through the opening 9; after which it will again assume an upright position and be again ready to receive and discharge the impurities collected by the next succeeding rain.

What I claim is 1. A device of the character described comprisinga support; a receptacle pivotally mounted thereon and provided with anoverhanging discharge spout at one side thereof, and also provided with a discharge opening; a receiving inlet carried by said receptacle near the top and at one side thereof; a feed pipe normally in alinement with said receiving inlet adapted to discharge thereinto; a conveyer section immovably secured upon the exterior of one side of said receptacle and so arranged as to be brought into alinement with said feed pipe when said receptacle is tilted on its pivotal support; and a means within said receptacle tending to direct the contents of said receptacle to a discharge opening.

2. A device of the character described comprising a support; a receptacle pivotally mounted thereon and provided with an overhanging discharge spout at one side thereof, and also provided with a discharge opening; a receiving inlet pocket carried by said receptacle near the top and upon the exterior of one side thereof; a feed pipe in alinement with said receiving inlet adapted to discharge thereinto; a conveyer section immovably secured to said receptacle and so arranged as to be brought into alinement with said feed pipe when said receptacle is tilted on its pivotal support; a means for restoring said receptacle to its normal position and a bottom within said receptacle tending to direct the contents of said receptacle to an outlet.

3. A device of the character described comprising a support; a receptacle pivotally mounted upon said support, the said pivot being located at one side of the center of gravity of said receptacle; an overhanging spout carried by said receptacle at its upper end; a receiving inlet pipe carried by said receptacle near the top thereof and upon the exterior of one side thereof; a feed pipe, normally, in alinement with said receiving inlet pipe adapted to discharge thereinto; a conveyer section immovably secured tothe exterior of said receptacle and so located as to be brought into alinement with said feed pipe when said receptacle is in its tilted position upon its pivotal support; a means secured to the upper end of said receptacle whereby said receptacle may be restored, manually, to its normal position; and a bottom for said receptacle, said bottom so constructed as to direct the contents of said receptacle, normally, toward an orifice through which the contents of the said receptacle may pass.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses,

CHARLES W. JOHNSON.

In the presence of M. A. CATHEY, FLYNN DAVIS.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. G. 

